Practice question

In the NFPA 704 diamond system, what does a rating of '4' in the red (flammability) section indicate?

The material is non-flammable
The material has a flash point below 73 degrees F and boiling point below 100 degrees F
The material requires moderate heating to ignite
The material has a flash point above 200 degrees F

Answer: B — The material has a flash point below 73 degrees F and boiling point below 100 degrees F

The correct answer is shown above. Try the full quiz for additional practice.